Metallic packing.



No. 735,372. PATENTED AUG. 4, 1,903.

E. M. HED'LEY.

METALLIC PACKING.

APPLIUATION FILED MAR. 25, 1903. no MODEL.

ELI/Z123 I No. 735,372; b v UNITED STATE Fatented August 4, 190 3.

IJATENT OFFICE.

EDWARD HEDLEY, on DEPEW, NEW YORK.

METALLIC PACKING.

SPECIFICATION forming part of Let'mers Patent N 0. 735,372, dated August4, 1903. Application filed March 25, 1903- Serial No. 149,476- (Nomodel.)

To all whom it mayconoem Be it known that I, EDWARD MxHEnLEY, a citizenof the United States, and a resident of Depew, Erie county, NewYork,have invented certain new and useful Improvements in MetallicPaokings, of whichihe following is declared to be a full, clear, andexact description.

The invention relates to metallic packings for piston-rods,valve-Steins, and the like and seeks to provide a simple and "efie'ctivearrangement for securely packing the rod which will take up little roomand which will'automatically adjust itself to compensate for wear. J Theinvention consists in the features of construction, arrangements, andcombinations of parts set forth in the following descrip tion,illustrated in the accompanying drawings, and more particularlypointedoutin the appended claims. 4

In the drawings, Figure 1 is a longitudinal section of the improvedpacking applied to a piston-rod. Fig. 2 is a crossr'section on the line2 2 of Fig. 1 with a part of one of the packing-rings broken away.

In the present improved construction pack: ing-rings A A, of Babbitt orother suitable antifriction metal, are provided, each of which ringscomprises an outer cylindrical portion 10 and inwardly projecting sideflanges 11, adapted to bear upon the'pistonrod 0. The outer faces of theside flanges 11' are conical, as indicated in Fig.1, and the inner facesof these flanges are preferably also conical. The packing-rings A A areformed of separate segmental sections, preferably three in number,having circumfer entially-extendedoverlapping ends 12, The adjacentradial faces'of the overlapping ends 12 are not in contact, so that therings A A may snugly fit the pistonrod O and maybe contracted tocompensate for wear; but the circumferential facesof these overlappingends, as clearly shown in Fig. 2, are snugly fitted together to preventleakage at these points.

Inner packing-rings B B, of Babbitt or other antifriction metal, arepreferably provided with outer conical faces and are snugly fittedwithin the side flanges 11 of the packingrings A A, with their innerfaces flushed able material.

with the inner edges of said side flanges, so as to bear, together withthe flanges 11,upon

the piston-rod O. The inner packing-rings inner rings B B, the ends ofwhich are cor-- respondingly chamfered or beveled. This arrangementinsures that the sections of the separate rings will be held in positionto break joints'and prevent leakage.

One or more of the sectional outer rings A A, with one or more of thecorresponding inner rings BBQmay beemployed, as desired or necessary.Where two or more sets of packing-rings are employed, they areheld apartby separator-rings D, which are preferably continuous and formedof brassor other suit- The separator-ring D is provided with oppositely-disposedconical faces snugly fitting the outer conical faces of the adjacentpacking-rings A A.

The packing-rings A A and the separatorring D are preferably inclosedwithin a telescopic casing comprising the pressure-rings E E and theoverlapping cylindrical portions e e, which extend about the packing andseparator rings; The pressure-rings E E are provided with conical faceswhich snugly fit and bear against the outer conical faces of thepacking-rings A A, and the pressure-ring E is preferably provided with alaterally-extending tubular section 6 about which is coiledaspring F,which in use bears against the pressure-ring E.

As indicated, the packing is set within a recess 14:,formed inthecylinder-head Gabout the piston-rod O, and is held "in place by asuitable gland H, securely fixed to the 'cylinder-head by bolts 15. Apacking-gasket 16 of suitablematerial is usually interposed, as shown,between the glands H and the cylinder-head G. The outer end of the glandHis provided with an inwardly-extending flange or shoulder 17, withinwhich is seta spacingring J, of brass or other suitable material.

The outer face of the spacing-ring J, which bears against the flange orshoulder 17,is preferably spherical, as indicated, and the adjacent faceof the flange is correspondingly shaped. The inner face of thespacing-ring J, against which the pressure-ring E bears, is preferablysquare, as indicated. The coiled compression-spring F extends betweenthe inner end of the recess 14 and the pressurering E, so that thepacking-rings A A and B B are firmlyheld against the piston-rod O, andall wear of the packing-rings is automatically taken up by the pressureof the spring. A swab K of suitable material is held in place about thepiston-rod O by a flanged ring 18, fixed to the outer end of the glandII.

The outer packing -ring, formed of segmental sections with overlappingends and having inwardly-extending side flanges in connection-with theinner packing-ring, the sections of which break joint with those of theouter packing-ring, a simple and effective metallic packing is providedwhich will prevent leaking, takes up but little room, may be brought toa snug bearing upon the piston-rod, and may be contracted to compensatefor wear. The telescopic casing formed of the pressure rings andoverlapping cylindrical extensions in connection with the coiledcompression-springprovide convenient means for automatically holding thepacking and separator rings in position for automatically adjusting thepacking-rings to compensate for any wear.

It will be noted that the packing-rings alone bear upon the piston-rod,while the adjacent partst'. 6., separator-ring and the telescopiccasing-are held out of contact with the piston-rod by the packing-rings.

Itis obvious that the improved packing may be employed for-valve-stems,plunger-rods, and the like and that n umerous changes could be made inthe details of structure Without departure from the essentials oftheinvention.

Having thus described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is-- 1. In a metallic packing, an outermetallic packing-ring formed of separate, segmental sections havingoverlapping ends,each of said sections having integral,inwardly-projecting side flanges adapted to bear upon the rod and aninner, sectional metallic packing ring snugly fitted within the sideflanges of said outer ring and also adapted to bear upon the rod, thesections of one of said rings breaking joints with the sections of theother of said rings.

2. In a metallic packing, an outer metallic packing-ring formed ofseparate segmental sections havingoverlapping ends,each of said sectionshaving integral, inwardly projecting side flanges having outer conicalfaces and adapted to bear upon the rod, an inner, sectional metallicpacking-ring snugly fitted within the side flanges of said outer ringand also adapted to bear upon the rod,

the sections of one of said rings breaking joints with the sections ofthe other of said rings and means engaging the conical faces of saidouter ring to yicldingly hold the rings in position.

3. In a metallic packing, an outer packingring provided withinwardly-projecting side flanges adapted to bear upon the rod, said ringbeing formed of separate segmental sections having circumferentiallyextended, overlapping ends, an inner, sectional packingring snuglyfitted within the side flanges of said'outer ring and also adapted tobear upon the rod, the sections of one of said rings breaking jointswith the sections of the other of said rings and means for holding therings in position.

4. In a metallic packing, anouter packingring provided withinwardly-projecting side flanges adapted to bear upon the rod, said ringbeing formed of separate, segmental sections having overlapping ends, aninner, sectional packing-ring fitted within said side flanges and alsoadapted to bear upon the rod and abutments on the sections of one ofsaid rings engaging the sections of the other of said rings to hold saidsections in position to break joints.

5. In a metallic packing, a packing-ring provided with inwardlyprojecting side flanges having outer conical faces and adapted to bearupon the rod, said ring being formed of separate segmental sectionshaving overlapping ends, an inner, sectional packingring snugly fittedWithin the side flanges of said outer ring and also adapted to bear uponthe rod, abutments fixed to the sections of said outer ring-intermediatetheir ends and projecting between the sections of said inner ring tohold said sections in position to break joints and means engagingconical faces of said outer ring to yieldingly hold said rings inposition.

6. In a metallic packing, an outer packing ring provided withinwardly-projecting side flanges having outer conical faces and adaptedto bear upon the rod,said ring being formed of separate, segmentalsections having overlapping ends, an inner, sectional packingring snuglyfitted within the said flanges of 7 said outer ring, the sections of oneof said rings breaking joints with the sections of the other of saidrings, pressure-rings having conical faces bearing upon the conicalfaces of said outer ring and a spring bearing upon one of saidpressure-rings.

7. In a metallic packing, separate, outer packing-rings. provided withinwardly-projecting side flanges having outer conical faces and adaptedto bear upon the rod, said rings being formed of segmental sectionshaving overlapping ends, inner sectional packingrings fitted between theside flanges of said outer rings and also adapted to bear upon the red,the sections of said inner rings breaking joints with the sections ofsaid outer rings, a separator-ring and pressure-rings ICO :0 overlappingends, inner sectional packingrings fitted between the side flanges ofsaid outer rings and also adapted to bear upon the rod, the sections ofsaid inner rings breaking joints with the sections of said outer rings,a separator-ring having conical faces interposed between said outerpacking-rings, a

telescopic casing comprising pressure-rings adapted to bear upon saidouter packing-rings and laterally-extending tubular portions inclosingsaid packing-rings and said separatorring and a spring adapted .to bearupon one of said pressure-rings.

' EDWARD M. HEDLEY.

Witnesses:

E. B. ROWLEY, ANNA L. KENNEDY.

